JPS63120216U

JPS63120216U -

Info

Publication number: JPS63120216U
Application number: JP1204787U
Authority: JP
Priority date: 1987-01-29
Filing date: 1987-01-29
Publication date: 1988-08-03

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示すレンズ鏡筒
の断面図、第２図は、第１図におけるレンズ鏡筒
における係合部材の拡大断面図、第３図は従来の
係合部材の拡大断面図であり、第４図は本考案の
第２実施例を示すレンズ鏡筒における係合部材の
拡大断面図、第５図は直進溝及びカム溝における
コロの回転方向を示した展開図、第６図は本考案
実施例のレンズ鏡筒におけるスラスト制限部材の
拡大断面図である。（主要部分の符号の説明）、１……レンズ保持
枠、２……回転筒、２ａ……直進溝、３……固定
筒、３ａ……カム溝、６……係合部材、６ｂ，６
ｃ……コロ。 FIG. 1 is a sectional view of a lens barrel showing a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of an engaging member in the lens barrel in FIG. 1, and FIG. 3 is a conventional engaging member. FIG. 4 is an enlarged sectional view of an engaging member in a lens barrel showing a second embodiment of the present invention, and FIG. 5 is an expanded view showing the rotation direction of the rollers in the linear groove and the cam groove. 6 are enlarged sectional views of the thrust limiting member in the lens barrel according to the embodiment of the present invention. (Explanation of symbols of main parts), 1... Lens holding frame, 2... Rotating tube, 2a... Straight groove, 3... Fixed tube, 3a... Cam groove, 6... Engaging member, 6b, 6
c...Koro.

Claims

[Claims for Utility Model Registration] (1) A first lens barrel having a first elongated hole, and a second elongated hole that fits into the first lens barrel and intersects with the first elongated hole of the first lens barrel. a second lens barrel having a fixed shaft and a rolling portion rotatably supported by the fixed shaft, the first elongated hole of the first lens barrel and the second
A lens barrel comprising: an engaging member provided to penetrate through a second elongated hole of the lens barrel; and a third lens barrel provided with the engaging member, wherein the rolling portion of the engaging member is , the first lens barrel of the first lens barrel
Consisting of a first rolling part that slides within an elongated hole, and a second rolling part that slides within a second elongated hole of the second lens barrel independently of the first rolling part. A lens barrel characterized by: (2) The first barrel is a fixed barrel, and the second barrel is a fixed barrel.
The lens barrel is a rotary barrel that is rotatable relative to the fixed barrel, and one of the first and second elongated holes is a cam groove that is inclined with respect to the optical axis, and the other is a cam groove that is inclined with respect to the optical axis. 2. The lens barrel according to claim 1, wherein the lens barrel is a straight groove extending along the lens barrel, and the third barrel holds a lens.